[Haskell-beginners] Using a monadic operation in a list comprehension.

[Derek McLoughlin]

Thanks very much for your clear explanation! Worked perfectly. You're
right about the ST - I got very confused at the start with
Control.Monad.ST. I'll be removing Graham's ST in favour of the
'normal' State monad.

On 21 September 2014 19:38, Kim-Ee Yeoh <ky3 at atamo.com> wrote:
>
> On Sun, Sep 21, 2014 at 9:02 PM, Derek McLoughlin
> <derek.mcloughlin at gmail.com> wrote:
>>
>> I'm trying to get Graham Hutton's "Programming with Effects" article
>> (http://www.cs.nott.ac.uk/~gmh/monads) working with Data.Tree instead
>> of the Tree he provides.
>
>
> Hi Derek,
>
> This is a lovely problem that's inspired a bunch of interesting papers
> recently.
>
> Here's a stab at the compilation error you're facing:
>
> http://www.atamo.com/blog/how-to-solve-a-tricky-monad-problem-1/
>
> Enjoy  :)
>
> -- Kim-Ee
>
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